/***************************************************************************
 * Copyright (C) 2010
 * by dude
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any
 * damages arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any
 * purpose, including commercial applications, and to alter it and
 * redistribute it freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you
 * must not claim that you wrote the original software. If you use
 * this software in a product, an acknowledgment in the product
 * documentation would be appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and
 * must not be misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source
 * distribution.
 *
 * Channel Launcher Class
 *
 * for WiiXplorer 2010
 ***************************************************************************/
#include <cstdio>
#include <cstdlib>
#include <cstring>

#include "channel_launcher.h"
#include "channels.h"
#include "banner.h"
#include "config/config.hpp"
#include "gecko/gecko.h"
#include "gui/text.hpp"
#include "loader/fs.h"
#include "memory/mem2.hpp"
#include "wstringEx/wstringEx.hpp"

#define DOWNLOADED_CHANNELS	0x00010001
#define SYSTEM_CHANNELS		0x00010002
#define RF_NEWS_CHANNEL		0x48414741
#define RF_FORECAST_CHANNEL	0x48414641

Channels ChannelHandle;

Channels::Channels()
{
}

void Channels::Init(u32 channelType, string lang, bool reload)
{
	if (reload) init = !reload;
	if (!init || channelType != this->channelType ||
		lang != this->langCode)
	{
		this->channelType = channelType;
		this->langCode = lang;
	
		this->channels.clear();
		Search(channelType, lang);
		init = true;
	}
}

Channels::~Channels()
{
}

u8 Channels::GetRequestedIOS(u64 title)
{
	u8 IOS = 0;

	char tmd[ISFS_MAXPATH] ATTRIBUTE_ALIGN(32);
	sprintf(tmd, "/title/%08x/%08x/content/title.tmd", TITLE_UPPER(title), TITLE_LOWER(title));

	u32 size;
	u8 *titleTMD = (u8 *)ISFS_GetFile((u8 *) &tmd, &size, -1);
	if(titleTMD == NULL)
		return 0;

	if(size > 0x18B)
		IOS = titleTMD[0x18B];

	free(titleTMD);
	gprintf("Requested Game IOS: %i\n", IOS);
	return IOS;
}

u64* Channels::GetChannelList(u32* count)
{
	u32 countall;
	if (ES_GetNumTitles(&countall) < 0 || !countall) return NULL;

	u64* titles = (u64*)MEM2_alloc(countall * sizeof(u64));
	if (!titles)
		return NULL;

	if(ES_GetTitles(titles, countall) < 0)
	{
		free(titles);
		return NULL;
	}

	u64* channels = (u64*)MEM2_alloc(countall * sizeof(u64));
	if (!channels)
		return NULL;

	*count = 0;
	for (u32 i = 0; i < countall; i++)
	{
		u32 type = TITLE_UPPER(titles[i]);

		if (type == DOWNLOADED_CHANNELS || type == SYSTEM_CHANNELS)
		{
 			if (TITLE_LOWER(titles[i]) == RF_NEWS_CHANNEL ||	// skip region free news and forecast channel
				TITLE_LOWER(titles[i]) == RF_FORECAST_CHANNEL)
				continue;
			channels[(*count)++] = titles[i];
		}
	}
	free(titles);

	return(u64*)MEM2_realloc(channels, *count * sizeof(u64));
}

bool Channels::GetAppNameFromTmd(u64 title, char *app, bool dol, u32 *bootcontent)
{
	bool ret = false;

	char tmd[ISFS_MAXPATH] ATTRIBUTE_ALIGN(32);
	sprintf(tmd, "/title/%08x/%08x/content/title.tmd", TITLE_UPPER(title), TITLE_LOWER(title));

	u32 size;
	u8 *data = ISFS_GetFile((u8 *) &tmd, &size, -1);
	if (data == NULL || size < 0x208)
		return ret;

	_tmd *tmd_file = (_tmd *)SIGNATURE_PAYLOAD((u32 *)data);
	u16 i;
	for(i = 0; i < tmd_file->num_contents; ++i)
	{
		if(tmd_file->contents[i].index == (dol ? tmd_file->boot_index : 0))
		{
			*bootcontent = tmd_file->contents[i].cid;
			sprintf(app, "/title/%08x/%08x/content/%08x.app", TITLE_UPPER(title), TITLE_LOWER(title), *bootcontent);
			ret = true;
			break;
		}
	}

	free(data);

	return ret;
}

Banner * Channels::GetBanner(u64 title, bool imetOnly)
{
	char app[ISFS_MAXPATH] ATTRIBUTE_ALIGN(32);
	u32 cid;
	if (!GetAppNameFromTmd(title, app, false, &cid))
	{
		gprintf("No title found\n");
		return NULL;
	}
	return Banner::GetBanner(title, app, true, imetOnly);
}

bool Channels::GetChannelNameFromApp(u64 title, wchar_t* name, int language)
{
	bool ret = false;

	if (language > CONF_LANG_KOREAN)
		language = CONF_LANG_ENGLISH;

	Banner *banner = GetBanner(title, true);
	if (banner != NULL)
	{
		ret = banner->GetName(name, language);
		delete banner;
		banner = NULL;
	}
	
	return ret;
}

int Channels::GetLanguage(const char *lang)
{
	if (strncmp(lang, "JP", 2) == 0) return CONF_LANG_JAPANESE;
	else if (strncmp(lang, "EN", 2) == 0) return CONF_LANG_ENGLISH;
	else if (strncmp(lang, "DE", 2) == 0) return CONF_LANG_GERMAN;
	else if (strncmp(lang, "FR", 2) == 0) return CONF_LANG_FRENCH;
	else if (strncmp(lang, "ES", 2) == 0) return CONF_LANG_SPANISH;
	else if (strncmp(lang, "IT", 2) == 0) return CONF_LANG_ITALIAN;
	else if (strncmp(lang, "NL", 2) == 0) return CONF_LANG_DUTCH;
	else if (strncmp(lang, "ZHTW", 4) == 0) return CONF_LANG_TRAD_CHINESE;
	else if (strncmp(lang, "ZH", 2) == 0) return CONF_LANG_SIMP_CHINESE;
	else if (strncmp(lang, "KO", 2) == 0) return CONF_LANG_KOREAN;
	
	return CONF_LANG_ENGLISH; // Default to EN
}

void Channels::Search(u32 channelType, string lang)
{
	u32 count;
	u64* list = GetChannelList(&count);
	if (list == NULL)
		return;

	int language = lang.size() == 0 ? CONF_GetLanguage() : GetLanguage(lang.c_str());

	for (u32 i = 0; i < count; i++)
	{
		if (channelType == 0 || channelType == TITLE_UPPER(list[i]))
		{
			Channel channel;
			if (GetChannelNameFromApp(list[i], channel.name, language))
			{
				channel.title = list[i];

				u32 title_h = (u32)channel.title;
				sprintf(channel.id, "%c%c%c%c", title_h >> 24, title_h >> 16, title_h >> 8, title_h);
			
				channels.push_back(channel);
			}
		}
	}

	free(list);
}

wchar_t * Channels::GetName(int index)
{
	if (index < 0 || index > Count() - 1)
	{
		return (wchar_t *) "";
	}
	return channels.at(index).name;
}

int Channels::Count() 
{ 
	return channels.size(); 
}

char * Channels::GetId(int index)
{
	if (index < 0 || index > Count() - 1) return (char *) "";
	return channels.at(index).id;
}

u64 Channels::GetTitle(int index)
{
	if (index < 0 || index > Count() - 1) return 0;
	return channels.at(index).title;
}

Channel * Channels::GetChannel(int index)
{
	if (index < 0 || index > Count() - 1) return NULL;
	return &channels.at(index);
}